Valve



Nov. 15, 1927.

T. F. GRAY VALVE Filed Feb. 25 1926 3 Sheets-Sheet 1 T. F. GRAY Nov. 15, 1927.

VALVE Filed Feb 25 1926 3 Sheets-Sheet 2 AW VMR Nov. 15, 1927; 1,648,986 l T. GRAY VALVE Filed Feb. 25 1926 s Sheets- She s: 5

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Patented Nov. 15, 1927.

TOM rnnnnnrcnenny, or srooxronr, ENGLAND.

VALVE.

Application filed February 25, 1926, Serial No. 90,647, and in Great Britain May 5, 1925.

Figure 1 is an elevation, Figure Qan endview with part in section, andFigure 3 a sectional plan on the line Al3 of Flgure 2,

illustrating a valve constructed in accord-.

ance with this invention;

The same reference letters in the dififerent pro ect1ng into the said chamber, and means views indicate the same or similar parts.

The valve shown in. the drawings 15 a parallel slide or full way valve having two valve discs, at, 7) operated by a. trunk or) hollow spindle 0 engaged by the screwed stem of the hand wheel. (Z, the valve seats 6 and f being formed by the ends of the sleeves g, h, inserted in the valve ways or by annular parts secured to said ends. In each of the said sleeves 9', it there is a port as i and j. Such ports provide connections or communications between: the opposite sides or the aforesaid valve discs at and I). The opening and closing of said communications is effected by the auxiliary valves 70, m, which are operated by the hand wheels n, 0. If, for example, the pressure fluid enters the valve way at p and the valve discs at and b are closed, the outlet valve way'g can be put I under the pressure in 7) by opening the auxillary valves 72,412, for the fluid then )asses throu h the valve bod art a as b H O i shownby the arrows at Figure 0. It deslred, the valve m may always beleft open or be. dispensed with, when the valve way 1) is always the inlet ofthe valve. The presence of thepressure'fluid in the valve body at 1* serves" to retain the valve discs a and o against their respective seats 6 and f and thus to prevent any chattering or slight lateral movements of the said discs during their opening and closing movements by the operation of the hand wheel (Z. Iclaimz- I 1 1. In valves, the combination comprising a'valve body having inlet and outlet ways with a central chamber between them, sleeves in said. ways projecting into the said chamher, valve discs abutting upon and movable between the ends of said sleeves, lateral apertures in the portions of said sleeves for, opening and closing said apertures.

52. In valves, the combination comprising a casing having inlet and outlet ways with a central chamber between thenn sleeves in said ways projecting into said chamber, valve discs fitting between the ends of said sleeves, means for imparting slidingmovements to said discs, and lateral apertures in the portions of said sleeves projecting intothe said chamber, said lateral apertures forming with the said chamber a by-pass betweensaid inlet and outlet Ways.

3. In valves, the combination comprising a casing having inlet and outlet ways with a central chamber between them, sleeves in said ways projecting into said chamber, valve discsfitting between the ends of said sleeves, means for imparting slidingm'over ments to said discs, lateral apertures in the portions of said sleeves projecting into the said'chamber, said lateral apertures forming with the said chamber a bypass between said inlet and outletways, and means for opening and closing said by-pass.

In testimony whereof I have signed my name to this specification.

TOM FREDERICK GRAY. 

